The invention discloses a
polyimide nanocomposite of a
naphthalene structure and a preparation method and application of the
polyimide nanocomposite. According to the composite, aromatic-
diamine which has high planarity and of the
naphthalene structure, various types of tetracarboxylic dianhydride and layered nanoparticles are adopted as raw materials; in the
argon atmosphere, the layered nanoparticles are dispersed in strong-polarity nonprotic
organic solvent, then
diamine and dianhydride are added to dispersing liquid, stirring and a reaction are conducted, and a
polyamide acid composite
adhesive solution is obtained; or while the layered nanoparticles are dispersed, the
diamine and the dianhydride are placed into another container for preparing
polyamide acid, then
nanoparticle dispersing liquid and the
polyamide acid are mixed, and the composite
adhesive solution is obtained; finally, the composite
adhesive solution is dehydrated, and the
polyimide nanocomposite is obtained. According to the polyimide nanocomposite, polyimide molecular chains of the type contain
naphthalene nucleuses which are good in planarity and high in rigidity, the prepared nanocomposite has excellent
thermal stability and barrier performance in combination with the enhancement effect of the layered nanoparticles, and the polyimide nanocomposite and the preparation method and application of the polyimide nanocomposite can be widely applied to fields of high-performance packaging, electronic device packaging and the like.